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Finding the Fourth Proportional to 454,799.80, 682,199.70 and 139,215.70

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Solution

The fourth proportional to 454,799.80, 682,199.70 and 139,215.70 is: 208,823.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,799.80 : 682,199.70 = 139,215.70 : x
  2. Step 2: Convert to fraction form
    454,799.80/682,199.70 = 139,215.70/x
  3. Step 3: Cross multiply
    454,799.80x = 682,199.70 × 139,215.70
  4. Step 4: Simplify right side
    454,799.80x = 94,972,908,775.29
  5. Step 5: Solve for x
    x = 94,972,908,775.29/454,799.80
  6. Step 6: Final answer
    x = 208,823.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.